Sadiq Khan, Labour candidate for London mayor, made a speech while the 'black flag of jihad' was flying and gave his support to groups linked to extremism

Sadiq Khan, Labour's candidate for London mayor, supported groups promoting Islamic extremism and gave a speech while the 'black flag of jihad' was openly flying, MailOnline can reveal.

In a series of incidents between 2008 and 2012, Mr Khan promoted organisations that have advocated violence against women, been accused in Parliament of spreading anti-Semitism and homophobia, and staged events featuring extremists and terrorists.

The revelations will come as a major embarrassment for the mayoral hopeful, who has spoken publicly of his concerns that his own daughter will become an extremist.